{"id":114826,"date":"2025-12-11T16:48:45","date_gmt":"2025-12-11T15:48:45","guid":{"rendered":"https:\/\/www.maccaferri.com\/fr\/success-stories\/travaux-de-securisation-de-parois-rocheuses-falaise-des-roches-blanches-rd-29-24\/"},"modified":"2026-02-16T15:41:46","modified_gmt":"2026-02-16T14:41:46","slug":"travaux-de-securisation-de-parois-rocheuses-falaise-des-roches-blanches-rd-29-24","status":"publish","type":"stories","link":"https:\/\/www.maccaferri.com\/fr\/exemples-de-r\u00e9ussites\/travaux-de-securisation-de-parois-rocheuses-falaise-des-roches-blanches-rd-29-24\/","title":{"rendered":"TRAVAUX DE S\u00c9CURISATION DE PAROIS ROCHEUSES \u2013 Falaise des Roches Blanches \u2013 RD 29, 24"},"content":{"rendered":"<div class=\"container-fluid carousel-image-gallery\">\n        <div class=\"row\">\n            <div id=\"carouselImageblock_63ae097fdffd7\" class=\"carousel slide carouselImageGallery\" data-bs-ride=\"carousel\">\n                <!-- \/\/ Indicators -->\n                <ol class=\"carousel-indicators\">\n                                            <li data-bs-target=\"#carouselImageblock_63ae097fdffd7\" data-bs-slide-to=\"0\" class=\"active\" aria-current=\"true\" aria-label=\"Slide\"><\/li>\n                                            <li data-bs-target=\"#carouselImageblock_63ae097fdffd7\" data-bs-slide-to=\"1\" class=\"\" aria-current=\"true\" aria-label=\"Slide\"><\/li>\n                                            <li data-bs-target=\"#carouselImageblock_63ae097fdffd7\" data-bs-slide-to=\"2\" class=\"\" aria-current=\"true\" aria-label=\"Slide\"><\/li>\n                                            <li data-bs-target=\"#carouselImageblock_63ae097fdffd7\" data-bs-slide-to=\"3\" class=\"\" aria-current=\"true\" aria-label=\"Slide\"><\/li>\n                                            <li data-bs-target=\"#carouselImageblock_63ae097fdffd7\" data-bs-slide-to=\"4\" class=\"\" aria-current=\"true\" aria-label=\"Slide\"><\/li>\n                                    <\/ol>\n\n                <div class=\"carousel-inner container\" role=\"listbox\">\n                                            <div class=\"carousel-item active\">\n                        <div class=\"col-12 col-lg-4 col-xl-4 col-xxl-4 space-mobile\">\n                            <div class=\"grid-item-wrapper\">\n                                <div class=\"img-responsive-wrapper\">\n                                    <div class=\"img-responsive\">\n                                        <div class=\"img-wrapper\"><img decoding=\"async\" src=\"https:\/\/www.maccaferri.com\/fr\/wp-content\/uploads\/2025\/12\/IMG_0083-scaled.jpg\" alt=\"\" \/><\/div>\n                                    <\/div>\n                                <\/div>\n                                <div class=\"griditem-text-wrapper text-center\">\n                                    <p class=\"griditem-text text-center\">SteelGrid\u00ae HR 50 grillage double torsion associ\u00e9 \u00e0 des c\u00e2bles longitudinaux en acier \u00e0 haute r\u00e9sistance, int\u00e9gr\u00e9s dans la nappe de grillage<\/p>\n                   \n                                <\/div>\n                            <\/div>\n                        <\/div>\n                        <\/div>\n                                            <div class=\"carousel-item \">\n                        <div class=\"col-12 col-lg-4 col-xl-4 col-xxl-4 space-mobile\">\n                            <div class=\"grid-item-wrapper\">\n                                <div class=\"img-responsive-wrapper\">\n                                    <div class=\"img-responsive\">\n                                        <div class=\"img-wrapper\"><img decoding=\"async\" src=\"https:\/\/www.maccaferri.com\/fr\/wp-content\/uploads\/2025\/12\/IMG_0091-scaled.jpg\" alt=\"\" \/><\/div>\n                                    <\/div>\n                                <\/div>\n                                <div class=\"griditem-text-wrapper text-center\">\n                                    <p class=\"griditem-text text-center\">Canalisation des blocs jusqu\u2019au pied de la falaise<\/p>\n                   \n                                <\/div>\n                            <\/div>\n                        <\/div>\n                        <\/div>\n                                            <div class=\"carousel-item \">\n                        <div class=\"col-12 col-lg-4 col-xl-4 col-xxl-4 space-mobile\">\n                            <div class=\"grid-item-wrapper\">\n                                <div class=\"img-responsive-wrapper\">\n                                    <div class=\"img-responsive\">\n                                        <div class=\"img-wrapper\"><img decoding=\"async\" src=\"https:\/\/www.maccaferri.com\/fr\/wp-content\/uploads\/2025\/12\/IMG_0092-scaled.jpg\" alt=\"\" \/><\/div>\n                                    <\/div>\n                                <\/div>\n                                <div class=\"griditem-text-wrapper text-center\">\n                                    <p class=\"griditem-text text-center\">Vue du haut de la falaise avec les poteaux du grillage pendu<\/p>\n                   \n                                <\/div>\n                            <\/div>\n                        <\/div>\n                        <\/div>\n                                            <div class=\"carousel-item \">\n                        <div class=\"col-12 col-lg-4 col-xl-4 col-xxl-4 space-mobile\">\n                            <div class=\"grid-item-wrapper\">\n                                <div class=\"img-responsive-wrapper\">\n                                    <div class=\"img-responsive\">\n                                        <div class=\"img-wrapper\"><img decoding=\"async\" src=\"https:\/\/www.maccaferri.com\/fr\/wp-content\/uploads\/2025\/12\/IMG_0141-scaled.jpg\" alt=\"\" \/><\/div>\n                                    <\/div>\n                                <\/div>\n                                <div class=\"griditem-text-wrapper text-center\">\n                                    <p class=\"griditem-text text-center\">Filet HEA 300\/10\/16 <\/p>\n                   \n                                <\/div>\n                            <\/div>\n                        <\/div>\n                        <\/div>\n                                            <div class=\"carousel-item \">\n                        <div class=\"col-12 col-lg-4 col-xl-4 col-xxl-4 space-mobile\">\n                            <div class=\"grid-item-wrapper\">\n                                <div class=\"img-responsive-wrapper\">\n                                    <div class=\"img-responsive\">\n                                        <div class=\"img-wrapper\"><img decoding=\"async\" src=\"https:\/\/www.maccaferri.com\/fr\/wp-content\/uploads\/2025\/12\/IMG_0080-scaled.jpg\" alt=\"\" \/><\/div>\n                                    <\/div>\n                                <\/div>\n                                <div class=\"griditem-text-wrapper text-center\">\n                                    <p class=\"griditem-text text-center\">Vue du d\u00e9flecteur dimensionn\u00e9 \u00e0 l&#039;aide de MacRo Design<\/p>\n                   \n                                <\/div>\n                            <\/div>\n                        <\/div>\n                        <\/div>\n                                    <\/div>\n            <\/div>\n\n        <\/div>\n    <\/div><div class=\"container-full text-bocolor-block-white\">\n        <div class=\"row\">\n        <div class=\"col-12\">\n            <div class=\"container box-container\">\n                <div class=\"row\">\n                    <div class=\"col-12\">\n                        <h3>Challenge<\/h3>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>    \n    <\/div>\n        <div class=\"row\">\n        <div class=\"col-12\">\n            <div class=\"container box-container\">\n                <div class=\"row\">\n                    <div class=\"col-12 content\">\n                        <p>Le contexte des \u00e9tudes et travaux pr\u00e9sent\u00e9s concerne la s\u00e9curisation de la falaise des Roches Blanches, le long de la RD29 \u00e0 Badefols-sur-Dordogne (24). Face \u00e0 des \u00e9boulements rocheux r\u00e9guliers, un diagnostic g\u00e9otechnique et une \u00e9tude de conception ont \u00e9t\u00e9 lanc\u00e9s en 2019 pour \u00e9valuer les risques et proposer des solutions. Les investigations ont mis en \u00e9vidence un versant bois\u00e9 d\u00e9p\u00e9rissant, de nombreuses instabilit\u00e9s et la d\u00e9gradation de certains dispositifs de protection existants. Des interventions d\u2019urgence (d\u00e9v\u00e9g\u00e9talisation, abattage d\u2019arbres, purges manuelles) ont \u00e9t\u00e9 r\u00e9alis\u00e9es fin 2022, mais les chutes de pierres ont persist\u00e9, n\u00e9cessitant des mesures provisoires sur la route.<\/p>\n<p><span>Les travaux de confortement s\u2019effectuent sur des falaises de 4 \u00e0 70 m de et pr\u00e9voient une s\u00e9curisation durable de la route, en tenant compte des contraintes du site. Les travaux pr\u00e9vus incluent des purges, la r\u00e9fection des ouvrages existants et l\u2019installation de nouveaux dispositifs de protection pour garantir la p\u00e9rennit\u00e9 de l\u2019infrastructure routi\u00e8re.<\/span><\/p>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n    <\/div>\n<div class=\"container-full text-bocolor-block-green\">\n        <div class=\"row\">\n        <div class=\"col-12\">\n            <div class=\"container box-container\">\n                <div class=\"row\">\n                    <div class=\"col-12\">\n                        <h3>Solution<\/h3>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>    \n    <\/div>\n        <div class=\"row\">\n        <div class=\"col-12\">\n            <div class=\"container box-container\">\n                <div class=\"row\">\n                    <div class=\"col-12 content\">\n                        <p>La solution retenue dans le cadre de l\u2019\u00e9tude de conception est celle d\u2019un grillage renforc\u00e9 de r\u00e9sistance minimale de 130 kN\/ml, install\u00e9 en configuration de grillage pendu.<\/p>\n<p>Le choix de l\u2019entreprise s\u2019est donc port\u00e9 sur l\u2019utilisation d\u2019un grillage type SteelGrid\u00ae HR 50, lequel se distingue par sa structure hybride, compos\u00e9e d\u2019un grillage double torsion associ\u00e9 \u00e0 des c\u00e2bles longitudinaux en acier \u00e0 haute r\u00e9sistance, int\u00e9gr\u00e9s dans la nappe de grillage. Cette conception innovante lui conf\u00e8re une capacit\u00e9 de r\u00e9sistance m\u00e9canique sup\u00e9rieure aux grillages traditionnels, permettant d\u2019absorber des efforts \u00e9lev\u00e9s li\u00e9s \u00e0 la pouss\u00e9 de blocs rocheux instables. Les avantages majeurs r\u00e9sident dans sa rapidit\u00e9 de pose, sa durabilit\u00e9, sa capacit\u00e9 \u00e0 canaliser les blocs jusqu\u2019au pied de la falaise, et l\u2019optimisation des interventions de maintenance gr\u00e2ce \u00e0 sa robustesse et \u00e0 l\u2019ind\u00e9maillabilit\u00e9 du grillage double torsion.<\/p>\n<p><span style=color: rgb(255, 255, 255);>Le dimensionnement de l\u2019ouvrage de protection a \u00e9t\u00e9 effectu\u00e9 \u00e0 l\u2019aide du logiciel MacRO 2, d\u00e9velopp\u00e9 par Maccaferri. Cet outil, accessible en ligne gratuitement, permet la conception de grillages et filets de protection de falaise en configuration d\u00e9flecteur. Cette approche consiste \u00e0 installer une nappe fix\u00e9e \u00e0 un c\u00e2ble de rive sup\u00e9rieur, lui-m\u00eame ancr\u00e9 sur des ancrages de t\u00eate, ou pos\u00e9 sur des poteaux, afin de canaliser la trajectoire des blocs susceptibles de se d\u00e9tacher de la falaise jusqu\u2019au pied de la pente. Ce syst\u00e8me vise ainsi \u00e0 pr\u00e9venir tout risque d\u2019atteinte \u00e0 la chauss\u00e9e par ces blocs.  <\/span><\/p>\n<p><span>En plus de la v\u00e9rification \u00e0 la traction du grillage, MacRO 2 permet \u00e9galement de dimensionner le c\u00e2ble de rive sup\u00e9rieur, ainsi que les ancrages associ\u00e9s, selon une approche innovante.<\/span><\/p><\/p>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n    <\/div><div class=\"wp-block-mac-container-block box-container\"><div class=\"container\"><h2>Used Products<\/h2><div class=\"row\"><div class=\"col-12 col-sm-12 col-md-12 col-lg-3 col-xl-3 col-xxl-3\"><div class=\"wp-block-mac-card-new-block block-latest-news-container\"><div class=\"card\"><div class=\"content-images\"><img decoding=\"async\" class=\"box-image\" src=\"https:\/\/www.maccaferri.com\/fr\/wp-content\/uploads\/2022\/12\/MacArmour_SteelGrid_2.jpg\" alt=\"MacArmour et SteelGrid\" title=\"MacArmour et SteelGrid\" \/><\/div><div class=\"card-body\"><h6>MacArmour et SteelGrid<\/h6><span class=\"abstract\">MacArmour&nbsp;est un produit 2 en 1 qui combine un grillage double torsion avec des c\u00e2bles de renfort&nbsp;en acier<\/span><a href=\"https:\/\/www.maccaferri.com\/fr\/produits\/macarmour-et-steelgrid\/\" class=\"cta\" rel=\"noopener\" title=\"MacArmour et SteelGrid\">Voir\n                           <span class=\"text\" value=\"\" \/>\n                           <\/a><div data-post-id=\"113615\" class=\"star \" title=\"Add to wishlist\"><span class=\"material-symbols-rounded starrate\">star<\/span><\/div><\/div><\/div><\/div><\/div><div class=\"col-12 col-sm-12 col-md-12 col-lg-3 col-xl-3 col-xxl-3\"><div class=\"wp-block-mac-card-new-block block-latest-news-container\"><div class=\"card\"><div class=\"content-images\"><img decoding=\"async\" class=\"box-image\" src=\"https:\/\/www.maccaferri.com\/fr\/wp-content\/uploads\/2022\/12\/Panels_1.jpg\" alt=\"Filets\" title=\"Filets\" \/><\/div><div class=\"card-body\"><h6>Filets<\/h6><span class=\"abstract\">Les filets HEA (High Energy Absorption) de Maccaferri sont les produits les plus rigides de notre gamme de syst\u00e8mes de grillages Mac.RO(TM), offrant u<\/span><a href=\"https:\/\/www.maccaferri.com\/fr\/produits\/filets\/\" class=\"cta\" rel=\"noopener\" title=\"Filets\">Voir\n                           <span class=\"text\" value=\"\" \/>\n                           <\/a><div data-post-id=\"113567\" class=\"star \" title=\"Add to wishlist\"><span class=\"material-symbols-rounded starrate\">star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><!--usedproducts-->","protected":false},"excerpt":{"rendered":"<p>La solution retenue dans le cadre de l\u2019\u00e9tude de conception est celle d\u2019un grillage renforc\u00e9 de r\u00e9sistance minimale de 130 kN\/ml, install\u00e9 en c<\/p>\n","protected":false},"featured_media":114787,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-114826","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":[113615,113567],"applications":[103481,103481],"solutions":[103661,103610],"sectors":[103460]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>TRAVAUX DE S\u00c9CURISATION DE PAROIS ROCHEUSES \u2013 Falaise des Roches Blanches \u2013 RD 29, 24 - Maccaferri France<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez nos r\u00e9ussites : TRAVAUX DE S\u00c9CURISATION DE PAROIS ROCHEUSES \u2013 Falaise des Roches Blanches \u2013 RD 29, 24. 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